TABLES OF CULISETA 477 



emerged from hibernation before the leaves are out. They are then hungry and 

 will attack persons in the daytime, though without any especial ferocity. 



The European representatives of Guliseta appear, from the published ac- 

 counts, to have essentially the same habits as ours, but some are more distinctly 

 associated with man. C. annulatus Schrank is said to stay commonly in houses, 

 stables, etc., and to hibernate in cellars, stables or caves. Theobald states 

 that the male hibernates as well as the female (Mon. Culic, i, 335, 1901), but 

 this observation has not been confirmed by others. Fiealbi thinks that this 

 species and G. spathipalpis Rondani do not suck blood but live on the juices of 

 plants. Theobald, however, quotes observations by W. Hatchett Jackson that 

 annulatus bites very severely (Mon. Culic, iv, 377-278, 1907), and Edwards 

 says "a particularly bad biter" (Entom. 261, 1912). Jackson also states that 

 he observed females sucking the juices of plants. No doubt the adults occa- 

 sionally bite, as do our species. Dr. Grabham observed spathipalpis at Madeira ; 

 it was not found in houses and did not bite (Theobald: Mon. Culic, iii, 155, 

 1903). No mating swarms have been observed in this genus. Grassi observed 

 the copulation of spathipalpis (Studi di uno zoologo sulla malaria, 2 ed., 122, 

 1901), evidently just as with our C. inornatu^; he found two pairs resting' 

 quietly on a window sash. 



Tables of the Species, 

 adults, structure and coloration. 



1. Wing-scales narrow, hair-like; no scales on the cross-veins 2 



Wing-scales broader; scales present on the cross-veins 3 



2. Tarsal joints narrowly white-ringed at base; wing-scales black, forming dis- 



tinct spots at the vein forkings incidens Thomson (p. 478) 



Tarsal joints not white ringed; wing-scaled brown, forming indistinct spots 



at the vein forkings impatiens Walker (p. 483) 



3. Tarsi not white-ringed; wings unspotted..... inornatus Williston (p. 488) 



Tarsi white-ringed at base ; wings spotted 4 



4. Middle and hind femora with a white ring 5 



Femora without white rings alaskaensis Ludlow (p. 498) 



5. White rings on hind tarsi covering the basal halves of distal joints 



maccrackejKv Dyar & Knab (p. 494) 

 White rings on hind tarsi covering the basal fourths of distal joints 



dugesi Dyar & Knab (p. 496) 



ADULTS, MALE GENITALIA. 



1. Penultimate segment with a ventral row of spines 2 



Penultimate segment without a row of spines below 3 



2. Row of spines long; unci long and conical impatiens Walker (p. 486) 



Row of spines short; unci broadly truncate incidens Thomson (p. 480) 



3. Unci slender, with small furcate crests inornatus Williston (p. 491) 



Unci uncrested 4 



4. Unci approximate at tip, with a small hook 5 



Unci separated at tip, with a large hooked point. . . alaskaensis Ludlow (p. 500) 



5. Penultimate segment of abdomen with two short stout spines 



dugesi Dyar & Knab (p. 497) 

 Penultimate segment of abdomen without such spines 



maccrackenw Dyar & Knab (p. 495) 



LAKV^. 



1. Lower head tuft with three long hairs, upper multiple 2 



Both head tufts multiple, alike impatiens Walker (p. 486) 



2. Basal pecten-teeth of the air tube furcate incidens Thomson (p. 480) 



Basal pecten teeth of the air tube with many branches 



inornatus Williston (p. 491) 



The larvffi of the following are unknown : alasTcaensis Ludlow ; maccracJcence 

 Dyar & Knab ; dugesi Dyar & Knab. 



